Memory limit was increased to allow for video file uploads as well as max file size.

I'm wondering if I'm running out of space in the website directory? My backup (Akeeba) bottoms out at 78% and when printing a webpage that prints at 400 pages it also gives me a buffering error at 76-79 percent. Can I change the default directory size somewhere or does it look like I'm going in the wrong direction? I have another site, much smaller, that works fine.

I assume from the akeeba documentation that the backup is using a temp directory to zip files up and buffers there and times out because it runs out of virtual space. This requires 40 percent free space.

Some hosts claim to give you "unlimited" space, or an absurd amount like 100Gb. According to our experience, they mostly lie. On many occasions the host only gave 100Mb or 1Gb of space. If unsure, please ask your host about the real free space you have in your account.